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Du D, Feng L, Chen P, Jiang W, Zhang Y, Liu W, Zhai R, Hu Z. Effects of Saccharomyces Cerevisiae Cultures on Performance and Immune Performance of Dairy Cows During Heat Stress. Front Vet Sci 2022; 9:851184. [PMID: 35300221 PMCID: PMC8921483 DOI: 10.3389/fvets.2022.851184] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2022] [Accepted: 02/07/2022] [Indexed: 12/17/2022] Open
Abstract
The dairy farming industry is facing massive economic losses as heat stress continues to rise. The purpose of this study was to see how feeding Saccharomyces cerevisiae culture (SC) influences productive performance, lactation performance, serum biochemical indexes, hormonal level, antioxidant capacity, and immune function in mid-lactating cows during heat stress. Forty-five healthy mid-lactation dairy cows with comparable milk yield, lactation days, and parity were randomly divided into 3 groups (15 cows in each group). The control group (CON) was fed the basal diet, while the treatment groups were fed the basal diet + first Saccharomyces cerevisiae culture 100 g/d (SC-1) and the basal diet + second Saccharomyces cerevisiae culture 30 g/d (SC-2), respectively. The SC-1 and SC-2 groups with SC added in the treatment groups reduced rectal temperature and respiratory rate in heat-stressed cows (P < 0.05). The milk yield of SC-1 and SC-2 treatment groups was significantly higher than that of CON (P < 0.05). Except for somatic cell count, which was significantly lower in SC-1 and SC-2 than in CON (P < 0.05), there were no significant differences in the milk components. The addition of SC: (i) increased serum urea levels (P < 0.05), but there was no significant difference in glucose, total cholesterol, alanine transaminase, aspartate aminotransferase, total protein, albumin and alkaline phosphatase levels (P > 0.05); (ii) increased serum levels of immunoglobulin-A, immunoglobulin-G, immunoglobulin M, interleukin-4, interleukin-10 and heat shock protein-70 (P < 0.05), while decreasing serum levels of interleukin-1β, interleukin-6, interleukin-2, interferon-γ and tumor necrosis factor-α (P < 0.05); (iii) increased total antioxidant capacity, glutathione peroxidase and superoxide dismutase in serum (P < 0.05), while decreasing malondialdehyde; (iv) increased serum levels of glucocorticoids, insulin, cortisol and prolactin (P < 0.05), while decreasing the serum levels of triiodothyronine and thyroxine (P < 0.05). In conclusion, under the current experimental conditions, the addition of SC can reduce rectal temperature and respiratory rate in heat-stressed mid-lactation cows, reduce the number of somatic cells in milk and improve the mid-lactation cow performance. In addition, SC addition to the diet can raise serum urea levels, regulate serum hormone levels, boost antioxidant capacity in mid-lactation cows, and boost overall immunity.
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Affiliation(s)
- Dewei Du
- Ruminant Nutrition and Physiology Laboratory, College of Animal Science and Technology, Shandong Agricultural University, Taian, China
| | - Lei Feng
- Ruminant Nutrition and Physiology Laboratory, College of Animal Science and Technology, Shandong Agricultural University, Taian, China
| | - Peng Chen
- Beijing Enhalor International Tech Co., Ltd., Beijing, China
| | - Wenbo Jiang
- Ruminant Nutrition and Physiology Laboratory, College of Animal Science and Technology, Shandong Agricultural University, Taian, China
| | - Yu Zhang
- Ruminant Nutrition and Physiology Laboratory, College of Animal Science and Technology, Shandong Agricultural University, Taian, China
| | - Wei Liu
- Ruminant Nutrition and Physiology Laboratory, College of Animal Science and Technology, Shandong Agricultural University, Taian, China
| | - Ruina Zhai
- College of Animal Science, Xinjiang Agricultural University, Urumqi, China
- *Correspondence: Ruina Zhai
| | - Zhiyong Hu
- Ruminant Nutrition and Physiology Laboratory, College of Animal Science and Technology, Shandong Agricultural University, Taian, China
- Zhiyong Hu
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Ngo TT, Bang NN, Dart P, Callaghan M, Klieve A, McNeill D. Pellets Inoculated with Bacillus amyloliquefaciens H57 Modulates Diet Preference and Rumen Factors Associated with Appetite Regulation in Steers. Animals (Basel) 2021; 11:ani11123455. [PMID: 34944232 PMCID: PMC8697938 DOI: 10.3390/ani11123455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2021] [Revised: 11/24/2021] [Accepted: 12/03/2021] [Indexed: 11/16/2022] Open
Abstract
Simple Summary The probiotic Bacillus amyloliquefaciens strain H57 (H57) may reinforce preferential feeding behaviour by changing ruminal fermentation parameters. Four rumen-fistulated steers were offered feedlot pellets, with (H57) or without (Control, C) the H57 probiotic. Half of the pellets were added to the rumen, at time zero, and half were offered for oral consumption over the next six hours, to make four feeding treatments. Each steer was offered each treatment over time. Each offering was over six days, with rumen fluid sampled over the last three days for a six-hour period per day. A five-minute preference test was performed at the end of each rumen sampling period by simultaneously offering the steers 4 kg of H57 and C pellets. The steers preferred the H57 over the C pellets but the route of offering (rumen versus oral) had no effect on preference. Ruminal pH and molar proportions of iso-butyrate and iso-valerate were higher and ammonia concentrations tended to be greater for H57 compared to C. However, since the route of offering had no effect on preference, the hypothesis, that ruminal fermentation changes take precedence over oral (taste) sensations in driving preference, was not supported. Abstract This study examined whether the probiotic Bacillus amyloliquefaciens strain H57 (H57) affects ruminal fermentation parameters that exercise post-ingestive feedback appetite control mechanisms. A 4 × 4 Latin square design was used to separate pre- and post-ingestive effects of H57 in four rumen-fistulated steers. The steers were offered a set amount of feedlot pellets, inoculated with H57 or without H57 (control, C). Half of the total amount of pellets fed were introduced intra-ruminally (r), and then the remaining pellets were orally consumed (o) to make four feeding treatments: H57r/H57o, H57r/Co, Cr/H57o and Cr/Co. Rumen fluid was sampled at 2, 4 and 6 h after feeding. Preference behaviour was tested immediately after the 6 h rumen fluid sampling by simultaneously offering the steers 4 kg of each of H57 and C pellets in adjacent troughs for 5 min. Steers preferred the pellets with added H57 over the C pellets (56:44; p < 0.001) and their preferences were not affected by the treatment protocol imposed to separate post- from pre-ingestive effects (p > 0.05). Steers fed H57 pellets had higher ruminal pH, molar proportions of iso-butyrate and iso-valerate (p < 0.05) and tended to have greater ruminal ammonia concentrations compared to those fed C pellets (p < 0.1). However, post-ingestive signals did not affect diet preference more than pre-ingestive signals.
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Affiliation(s)
- Thi Thuy Ngo
- School of Veterinary Science, The University of Queensland, Gatton, QLD 4343, Australia; (N.N.B.); (D.M.)
- Faculty of Animal Science, Vietnam National University of Agriculture, Hanoi 131000, Vietnam
- Correspondence:
| | - Nguyen N. Bang
- School of Veterinary Science, The University of Queensland, Gatton, QLD 4343, Australia; (N.N.B.); (D.M.)
- Faculty of Animal Science, Vietnam National University of Agriculture, Hanoi 131000, Vietnam
| | - Peter Dart
- School of Agriculture and Food Sciences, The University of Queensland, Gatton, QLD 4343, Australia;
| | | | - Athol Klieve
- Queensland Alliance for Agriculture and Food Innovation, The University of Queensland, St Lucia, QLD 4069, Australia;
| | - David McNeill
- School of Veterinary Science, The University of Queensland, Gatton, QLD 4343, Australia; (N.N.B.); (D.M.)
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Sauls-Hiesterman JA, Olagaray KE, Sivinski SE, Bradford BJ, Stevenson JS. First postpartum ovulation, metabolites and hormones in follicular fluid and blood in transition dairy cows supplemented with a Saccharomyces cerevisiae fermentation product. Theriogenology 2021; 164:12-21. [PMID: 33529807 DOI: 10.1016/j.theriogenology.2021.01.013] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2020] [Revised: 01/05/2021] [Accepted: 01/19/2021] [Indexed: 01/31/2023]
Abstract
We hypothesized that feeding a Saccharomyces cerevisiae fermentation product (SCFP) from -4 through +7 wk (calving = Day 0) facilitates early first postpartum ovulation and alters blood and follicular fluid concentrations of glucose, beta-hydroxybutyrate (BHB), free fatty acids (FFA), and steroid hormones favorable to subsequent fertility. Holstein cows were fed individually a SCFP product (n = 24) or served as controls (n = 23). Blood samples were collected at wk -4 and -2 from expected calving and at 1, 2, 5, and 7 wk postpartum to determine plasma concentrations of FFA and BHB. Early spontaneous ovulation (progesterone > 1 ng/mL or corpus luteum presence by postpartum median Day 33) or late ovulation was determined. Plasma FFA in weekly samples was not affected by SCFP supplementation, but FFA was greater (P < 0.01; week by ovulation status) in late compared with early ovulating cows during and after postpartum wk 2. Plasma BHB in weekly samples was greater (P = 0.03) in SCFP than control cows and tended (P = 0.06) to be greater in late than early ovulating cows. Cows were exposed to ovulation synchronization (GnRH, PGF2α, and GnRH on Days 33, 40, and 43 ± 3, respectively). Transvaginal dominant follicle aspiration was conducted at Day 50, 7 d after GnRH on Day 43. Metabolites (FFA, BHB, and glucose) and steroid hormones (progesterone, androstenedione, and estradiol) measured in follicular fluid and blood samples collected at aspiration revealed that androstenedione in serum was numerically less (P = 0.11) in SCFP-treated compared with control cows, whereas androstenedione in serum was less (P < 0.05) in late than early ovulating cows. Concentrations of BHB (r = 0.75) and glucose (r = 0.52) in follicular fluid were positively correlated (P < 0.01) with those in blood. Body weight at calving and Day 42 was less (P ≤ 0.05), and energy balance through Days 28 and 42 was more positive (P < 0.05) in early than late ovulating cows and in SCFP-supplemented compared with control cows (P < 0.05). Dry matter intake, daily milk yield, and yields of fat, protein, lactose, and total solids were less (P < 0.01) in early compared with late ovulating cows, whereas milk fat percentage was increased (P < 0.01) by SCFP supplementation. We conclude that elevated postpartum BHB and FFA in plasma, greater negative energy balance, and greater milk yield and components were associated with later postpartum ovulation, but metabolites and steroid hormones in blood and follicular fluid were unaffected by SCFP treatment or ovulation status except for androstenedione.
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Affiliation(s)
- J A Sauls-Hiesterman
- Department of Animal Sciences and Industry, Kansas State University, Manhattan, United States
| | - K E Olagaray
- Department of Animal Sciences and Industry, Kansas State University, Manhattan, United States
| | - S E Sivinski
- Department of Animal Sciences and Industry, Kansas State University, Manhattan, United States
| | - B J Bradford
- Department of Animal Sciences and Industry, Kansas State University, Manhattan, United States
| | - J S Stevenson
- Department of Animal Sciences and Industry, Kansas State University, Manhattan, United States.
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Impact of Nutrients on the Hoof Health in Cattle. Animals (Basel) 2020; 10:ani10101824. [PMID: 33036413 PMCID: PMC7600182 DOI: 10.3390/ani10101824] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Revised: 10/01/2020] [Accepted: 10/03/2020] [Indexed: 12/12/2022] Open
Abstract
Lameness is currently one of the most important and economically demanding diseases in cattle. It is manifested in a change in locomotion that is associated with lesions, especially the pelvic limbs. The disease of the hoof is painful, affecting the welfare of dairy cows. Important factors that influence the health of the limbs include nutrition, animal hygiene, stable technology, and genetic and breeding predispositions. Nutrition is one of the basic preventive factors affecting the quality and growth of the hoof horn, and the associated prevalence of hoof disease. The strength and structure of the hoof horn are affected by the composition of the feed ration (amino acids, minerals, vitamins, and toxic substances contaminating the feed ration, or arising in the feed ration as metabolites of fungi).
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Chen J, Zhang Y, You J, Song H, Zhang Y, Lv Y, Qiao H, Tian M, Chen F, Zhang S, Guan W. The Effects of Dietary Supplementation of Saccharomyces cerevisiae Fermentation Product During Late Pregnancy and Lactation on Sow Productivity, Colostrum and Milk Composition, and Antioxidant Status of Sows in a Subtropical Climate. Front Vet Sci 2020; 7:71. [PMID: 32133379 PMCID: PMC7041407 DOI: 10.3389/fvets.2020.00071] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Accepted: 01/28/2020] [Indexed: 11/30/2022] Open
Abstract
This study aimed to evaluate the effects of dietary supplementation of Saccharomyces cerevisiae fermentation product (SCFP) during late pregnancy and lactation on sow productivity, colostrum and milk composition, and antioxidant status of sows in a subtropical climate. The study was a 2 × 2 factorial treatment design where the first factor was environmental THI level [Low THI (08:00-19:00: 70.76 ± 0.45, 19:00-08:00: 67.91 ± 0.18, L-THI) or High THI (08:00-19:00: 75.14 ± 0.98, 19:00-08:00: 68.35 ± 0.18, H-THI], and the second factor was dietary treatment (supplemented with or without 3 kg/t SCFP). A total of 120 sows were randomly allotted to the four treatments (n = 30). The feeding trial was conducted from 85-days post-breeding until 21-days post-partum. Compared with L-THI group, sows from H-THI group had lesser individual piglet birth weight, individual piglet weight at weaning, preweaning average daily gain of piglets, average daily feed intake of sows during lactation, and protein percentage in 14-days milk. Additionally, sows from H-THI group had lesser antioxidant status, indicated by lesser serum total antioxidant capacity (T-AOC), and superoxide dismutase (SOD) activity at parturition; lesser serum T-AOC and glutathione peroxidase (GSH-Px) activity at 14-days post-partum, as well as lesser SOD activity in colostrum. Compared with sows fed the control diet, sows fed the SCFP diet had greater number of piglets weaned, litter weight at weaning, and preweaning average daily gain of piglets. Moreover, sows fed the SCFP diet had improved antioxidant status as indicated by higher serum T-AOC at parturition, and lesser malondialdehyde (MDA) content in colostrum and 21-days milk. In conclusion, H-THI negatively affected the productivity, milk composition, antioxidant status, and lactation feed intake of sows. Dietary supplementation of SCFP partially alleviated the adverse effects of H-THI, by improving lactation performance and antioxidant status of sows without influencing reproductive performance and colostrum and milk composition in a subtropical climate.
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Affiliation(s)
- Jun Chen
- Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou, China
- Jiangxi Province Key Laboratory of Animal Nutrition, Engineering Research Center of Feed Development, Jiangxi Agricultural University, Nanchang, China
| | - Yufeng Zhang
- Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou, China
| | - Jinming You
- Jiangxi Province Key Laboratory of Animal Nutrition, Engineering Research Center of Feed Development, Jiangxi Agricultural University, Nanchang, China
| | - Hanqing Song
- Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou, China
| | - Yinzhi Zhang
- Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou, China
| | - Yantao Lv
- Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou, China
| | - Hanzhen Qiao
- Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou, China
| | - Min Tian
- Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou, China
| | - Fang Chen
- Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou, China
| | - Shihai Zhang
- Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou, China
| | - Wutai Guan
- Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou, China
- College of Animal Science and National Engineering Research Center for Breeding Swine Industry, South China Agricultural University, Guangzhou, China
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Ahmad Para I, Ahmad Shah M, Punetha M, Hussain Dar A, Rautela A, Gupta D, Singh M, Ahmad Naik M, Rayees M, Sikander Dar P, Ahmad Malla B. Feed fortification of periparturient Murrah buffaloes with dietary yeast (Saccharomyces cerevisiae) elevates metabolic and fertility indices under field conditions. BIOL RHYTHM RES 2019. [DOI: 10.1080/09291016.2018.1557834] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Irshad Ahmad Para
- Department of Veterinary Physiology and climatology, Indian veterinary research institute, Bareily, India
| | - Mudasir Ahmad Shah
- Department of Veterinary surgery and radiology, University of Indian veterinary research institute, Bareilly, India
| | - Meeti Punetha
- Department of Veterinary Physiology and climatology, Indian veterinary research institute, Bareily, India
| | - Aashaq Hussain Dar
- Department of Livestock Production Management, College of Veterinary & Animal Sciences, Govind Ballabh Pant, University of Agriculture and Technology, Pantnagar, India
| | - Ankita Rautela
- Department of Veterinary Physiology and climatology, National dairy research institute (NDRI), Karnal, India
| | - Deepanshu Gupta
- Department of Veterinary Physiology and climatology, Indian veterinary research institute Izzatnagar, Bareilly, India
| | - Mahendra Singh
- Animal Physiology Division, ICAR-National Dairy Research Institute, Karnal, India
| | - Muzaffar Ahmad Naik
- Division of livestock production and management, ICAR-National dairy research institute, Karnal, India
| | - Mohmad Rayees
- Animal Physiology Division, ICAR-National Dairy Research Institute, Karnal, India
| | - Parvaiz Sikander Dar
- Department of Microbiology, Indian veterinary research institute Izzatnagar, Bareilly, India
| | - Bilal Ahmad Malla
- Department of Public health, Indian veterinary research institute Izzatnagar, Bareilly, India
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Bruno R, Farias A, Hernández-Rivera J, Navarrette A, Hawkins D, Bilby T. Effect of gonadotropin-releasing hormone or prostaglandin F2α-based estrus synchronization programs for first or subsequent artificial insemination in lactating dairy cows. J Dairy Sci 2013; 96:1556-67. [DOI: 10.3168/jds.2012-5885] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2012] [Accepted: 11/09/2012] [Indexed: 11/19/2022]
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KADOKAWA H, SAKATANI M, HANSEN PJ. Perspectives on improvement of reproduction in cattle during heat stress in a future Japan. Anim Sci J 2012; 83:439-45. [DOI: 10.1111/j.1740-0929.2012.01011.x] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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AlIbrahim R, Crowe M, Duffy P, O‘Grady L, Beltman M, Mulligan F. The effect of body condition at calving and supplementation with Saccharomyces cerevisiae on energy status and some reproductive parameters in early lactation dairy cows. Anim Reprod Sci 2010; 121:63-71. [DOI: 10.1016/j.anireprosci.2010.04.183] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2010] [Revised: 04/07/2010] [Accepted: 04/19/2010] [Indexed: 11/16/2022]
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Bamber RL, Shook GE, Wiltbank MC, Santos JEP, Fricke PM. Genetic parameters for anovulation and pregnancy loss in dairy cattle. J Dairy Sci 2010; 92:5739-53. [PMID: 19841234 DOI: 10.3168/jds.2009-2226] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
The objectives were to estimate heritabilities and genetic variances for anovulation at ~50 d in milk and pregnancy loss occurring between first and second pregnancy diagnoses after artificial insemination. Data were originally collected for trials on reproductive management. Anovulation data consisted of 5,818 records from 13 studies in 8 herds with an overall prevalence of 23.3%. A Bayesian approach using Markov Chain Monte Carlo methods was used in mixed threshold models for both traits. The statistical model for anovulation included fixed effects [parity, herd-study-treatment, and body condition score (BCS)], covariates (inbreeding and milk yield), and random effects (sire and residual). A second statistical model included all terms in the first model except BCS. In addition, 2 bivariate, mixed sire models were used to analyze anovulation with BCS and anovulation with milk yield. The posterior mean heritability estimate for anovulation was 0.171 [posterior standard deviation (PSD) = 0.052]. Correlations of anovulation with milk yield were as follows: genetic = 0.168, PSD = 0.187; residual = -0.046, PSD = 0.022; and phenotypic = -0.036. Bivariate analysis of BCS with anovulation showed a genetic correlation (-0.301, PSD = 0.177) and phenotypic correlation (-0.192, PSD = 0.019). Pregnancy-loss data consisted of 3,775 records from 14 studies in 8 herds with an overall prevalence of 14.4%. Analysis of pregnancy loss used a sire-maternal grandsire threshold model with embryo survival as the subject of analysis. Independent variables consisted of fixed effects (parity and herd-study), covariates (embryo and maternal inbreeding), and random effects (sire of embryo, maternal grandsire of embryo, and residual). In addition, separate sire models were analyzed using embryo as the subject and cow as the subject of analysis. The sire-maternal grandsire model yielded a heritability for direct effect of 0.489 (PSD = 0.221) and for maternal effects of 0.166 (PSD = 0.113). In this study, the breeding value variance for embryo effects was 3 times the breeding value variance for maternal effects, indicating that, at the level of breeding values, the embryo's ability to survive has a greater effect on pregnancy loss than does the cow's ability to maintain the pregnancy. These results suggest that genetic improvement of reproductive performance could be enhanced by selection for fundamental measures such as abnormally long periods of postpartum anovulation and pregnancy loss. Larger studies of these traits are needed to obtain parameter estimates with greater precision.
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Affiliation(s)
- R L Bamber
- Dairy Science Department, University of Wisconsin, Madison, WI 53706, USA
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TAKUMA T, SAKAI S, EZOE D, ICHIMARU H, JINNOUCHI T, KAEDEI Y, NAGAI T, OTOI T. Effects of Season and Reproductive Phase on the Quality, Quantity and Developmental Competence of Oocytes Aspirated from Japanese Black Cows. J Reprod Dev 2010; 56:55-9. [DOI: 10.1262/jrd.09-071h] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- Tetsuya TAKUMA
- Laboratory of Animal Reproduction, The United Graduate School of Veterinary Science, Yamaguchi University
- Saga Prefectural Livestock Experiment Station
| | | | | | | | | | - Yukine KAEDEI
- Laboratory of Animal Reproduction, The United Graduate School of Veterinary Science, Yamaguchi University
| | - Takashi NAGAI
- National Institute of Livestock and Grassland Science
| | - Takeshige OTOI
- Laboratory of Animal Reproduction, The United Graduate School of Veterinary Science, Yamaguchi University
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